20 cars, 86 passengers, 5 bays. 80 seconds on the clock.
86 waiting
You have 80 seconds, starting at your first tap. A bump costs 3 seconds.
Call the cars to the stop in this order: 1, 10, 17, 13, 16, 3, 18, 9, 14, 2, 6, 8, 15, 7, 12, 11, 5, 20, 4, 19.